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Autothermal reforming device for producing hydrogen from natural gas

A technology of autothermal reforming and natural gas, applied in hydrogen, inorganic chemistry, non-metallic elements, etc., can solve the problems of unsuitability and bulky reactor, and achieve the effects of reducing heat energy loss, safe and reliable operation, and simple structure

Inactive Publication Date: 2012-05-23
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0003] Although natural gas reforming hydrogen production technology has been widely used in industry, there are still many problems to be solved in the small-scale distributed hydrogen production of this technology
The reaction is a strong endothermic reaction, and energy supply and heat transfer are a bottleneck problem for this reaction. The reactors commonly used in industry are bulky and not suitable for distributed hydrogen production in kilowatt-level fuel cell systems for households and small commercial users. requirements

Method used

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  • Autothermal reforming device for producing hydrogen from natural gas
  • Autothermal reforming device for producing hydrogen from natural gas
  • Autothermal reforming device for producing hydrogen from natural gas

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the embodiments of the present invention are not limited thereto.

[0036] like figure 1 , 2 , 3, and 5, a device for producing hydrogen by autothermal reforming of natural gas, including an autothermal reforming reactor, an outer wall of a combustion chamber 2, a burner 3, an inner heat exchange coil 4, an outer heat exchange coil, and a combustion Exhaust gas outlet 14, flange 8 and mixing valve 16; the outer wall of the combustion chamber 2 is a hollow circular tube, and the hollow circular tube is equipped with a self-heating reforming reactor; the external heat exchange coil includes a natural gas heat exchange tube 5-1 and a water heat exchange tube The tubes 5-2 are all spirally wound outside the outer wall 2 of the combustion chamber from bottom to top, and are used for preheating natural gas and water; the number of winding turns of...

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Abstract

The invention discloses an autothermal reforming device for producing hydrogen from natural gas, comprising an autothermal reforming reactor, a combustion chamber outer wall, a combustor, an internal heat exchanger coiler, an external heat exchanger coiler, a combustion tail gas outlet, a flange and a mixing valve. The combustion chamber outer wall is a hollow round pipe which is internally provided with the autothermal reforming reactor, the external heat exchanger coiler comprises a natural gas heat exchange pipe and a water heat exchange pipe which are spirally wound outside the combustionchamber outer wall from bottom to top respectively, the internal heat exchanger coiler is spirally wound on a reaction pipe from top to bottom, a feed gas inlet pipe is arranged at the bottom of one side of the reaction pipe, one end of the feed gas inlet pipe is connected into the reaction pipe, and the other end of the feed gas inlet pipe is connected with the internal heat exchanger coiler through a high-temperature-resistant joint. The invention for autothermal reforming hydrogen production has high start speed, low system energy consumption, small device size and less floor area, can ensure the reaction operation, without additional energy, is convenient and practical to mount and dismount, and can be arranged in idle spaces on a balcony, under an eave, and the like.

Description

technical field [0001] This patent relates to an atmospheric pressure natural gas autothermal reforming hydrogen production device, which is used to provide hydrogen-rich synthesis gas for a kilowatt-level proton exchange membrane fuel cell cogeneration system. technical background [0002] Hydrogen energy is a new type of efficient and clean energy, which is regarded as an effective alternative energy to solve the problem of greenhouse effect and improve energy utilization. However, hydrogen is not a primary resource that exists in large quantities in nature, and its density is low, flammable and explosive, storage and transportation costs are high, and it is dangerous. How to obtain hydrogen conveniently is one of the bottlenecks for the widespread use of hydrogen energy. Natural gas steam reforming technology is currently the most commonly used technical method for producing hydrogen and synthesis gas in industry. The typical reaction temperature is 800-900°C and the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/38
Inventor 解东来彭昂
Owner SOUTH CHINA UNIV OF TECH
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